摘要
文章利用双指示剂甲醛滴定法测定味精中谷氨酸钠含量。双指示剂使用量2~3滴,中性甲醛添加浓度10%,对样品进行测定,与酸度计法进行比较。方法平均回收率99.6%,变异系数0.33%,表明该方法具有较高的准确度和精密度。
This artice studies monosodium glutamate is determined by the double indicator formoltitration.The quantity of each of indicator agents are 2~3 drops.The dopant concentration of methanal is 10%.Sample is determined which compared to acidity meter.The method of recovery rate is 99.6%,the variation coefficient is 0.33%,which showed that the measurement accuracy and precision are favorable.
出处
《中国调味品》
CAS
北大核心
2011年第4期84-86,共3页
China Condiment
关键词
双指示剂甲醛滴定法
酸度计法
谷氨酸钠
the double indicator formoltitration
the acidity meter
monosodium glutamate
